I learned a lot of stuff not related to android such as CI/CD, Docker, Swagger, etc. But not much android related stuff that I learned, as android development everywhere is almost the same, I can see the same pattern of mistakes, bad practices in every team I moved to. I moved across several teams, as of the nature of the architect's role is to work on different app and teams to solve their problem. Also by that time Google itself published a lot of good solutions(Jetpack) to improve android development experience and it makes my job much easier than ever. Moving across different teams and keep seeing and repairing the same mistakes it starts to make me feel bored with Android or front end in general.